bjones

I used the black plastic lid of a coffee creamer container to overlay a rip or break in plastic bumper of my 610 mule. I stapled it over the break still together.

I have a 2007 and plugs fouled pretty often as well. Thanks to this forum and Travis specifically they suggested a colder plug and made a big difference.

BPR4 I think,  was using a BPR5

Hang in bud, friend in rehab now from stroke. Making good progress.  Will b praying 4 U.

Belt or clutch assembly could be the problem, purely guess. My 610 has a cover with clutch and belt assembly as your rev it up it goes, gotta be in that area. Good luck!

Update, got around 10 hrs and hasn't fouled a plug, fingers crossed. The lower heat number has seemed to help.  Thanks for you guys help. B well

I am sure you read my comment that fixed my issue. Don't know what to tell you.  Have you taken it to kawasaki deal, would think they have seen and fixed this problem or wouldn't charge you if they can't fix it.  Good luck with it. 

Thanks, I am somewhat familiar with this set up. Have a koler two cylinder engine on my 0 turn that would kill a plug after it got hot and it turned out to be the coil.  I put one of those inline plug tester devices on the cylinder and it  showed eractic spark. Do you think my coil could be weak?  I have suspected this but haven't replaced it. Thanks 

So far so good.  I did have a skip or similar issue but didn't foul the plug.  Was on the road going up a steep hill about 1/4 mile and acted like plug fouled but pulled choke and babied it home and it cleared up before I got home so may have another issue besides plug.  Pulled the plug and it looked ok and didn't foul it so I cleaned it and put back in and has about 7  hrs of run time so the colder plug definitely helped.  Thanks for the follow up

56 minutes ago, Travis said:

How's it doing?

So far so good, got around 3 hrs on clock , hope it holds up. Thanks for asking

I installed a colder plug , original plug is:

BPR5ES, I installed  BPR4ES.  Documented hrs and will see how long it goes. Thanks for responding !!

So would you think a colder plug would help, i may give it a try.  thanks

Did you mean colder plug? Some say to use hotter so I'm confused. Before the new battery the plug would be really black and sutted up. Now with newer battery the fouled plugs are white that I think  indicates it is maybe to hot. Thanks for responding.

2007 Mule 610,  owned for 8 yrs and valves were ticking when I got it and had them adjusted twice and this is when plugs began to foul.  I replaced battery (used battery I had on hand) a yr ago and didn't foul a plug for some time and replaced batter (new) with a bigger lawn mower type battery again a month ago and have fouled two plug since.  Had carb cleaned and valves adjusted and still fouls plugs way to often.  Friend has a mule just like mine and his does same thing. Have read this is a common problem with 610 mule.  Any help or suggestions would be welcomed.  Thanks and stay healthy.

I think it must have something to do with firing, could be wrong. Runs much bettet.

Just an update from several months ago.  As noted had carb cleaned and air filter changed and helped a lot but have had plug foul twice in several months.  Battery was weak and finally died so I replace it with a lawn mower batter i already had with a little mod to the hold down device.  Mule runs much much better and has not fouled a plug since, have pulled the plug several times to inspect and no where near as black and suttey as before so I am assuming the weak battery was the cause or at least a big part of it.  What U guys think?   Thanks and b well

On 1/14/2020 at 9:16 AM, rjfrider said:

I'll try the squeeze idea,  thanks!

Figured it out.   A plastic stud on  each side go es down into the floor 

Sorry for late response for some reason I don't get an email , mule is doing good, prob. 7 hrs run time no issues.

Update: Have driven mule about 15-18 miles at about 3 hrs on clock and plug looks pretty good and oil level is OK.  Will update as I get more run time, I think it is important to update these post so others can get info for similar problems they may have.  Merry Christmas to all

Got the mule back late yesterday and guy said he cleaned carb and replaced needle valve and set float. Hopefully this will solve the gas  in oil problem.  The fouling of plug was due to  the foam air filter.  It was deteriorated and when wide open throttle it pulled it into paper filter and starved mule of air causing more  gas than air and foul plug.  Haven't had time to run mule any so will report back when I have run time.  

Took mule to my mechanic who has worked on several mules in the past and let him see what might be the problem.  I have read on several different places that the mule is bad about fouling plugs for whatever reason.    I will update when  get mule back with what  he found and hopefully fixed.

Yes exactly I'll keep an eye on it, thanks.

I have a fairly new fuel pump on it from a previous repair and It maybe the needle valve.  I will monitor the oil level and see what happens.  Thanks again

Not sure about transmission but I think it is mated but it has a red fluid in it  80-90 weight and I checked it.  It has a separate reservoir and dip stick.  It was a little low but not bad so I topped it off.  Also changed oil only no filter, took just a tad over 1 qt.  I measured oil drained out and it must have been at least 1.5 qts.  Mule is making oil, LOL.  Will monitor and see if it stays at current level.  Thanks again

Kinda hard to tell about gas in oil, didn't smell to much like it had gas in oil but could be wrong.  Last time I changed oil I didn't fill with oil before installing.   Have had a problem with plug fouling after about 2 hrs meter run time, plug will be black as sut, no oil or gas smell on it just really black.  Wonder if the two are related.  If gas is in oil what could cause this, maybe carb. letting gas flow by.  Thinking of putting in a gas line cut off, that should eliminate that concern until I get it my mechanic to look in to plug fouling.  What you think and thanks for responding.  Mule has 360 hrs light yard use only.

Strange issue and it has happened twice.  Changed oil twice and after a while when oil is checked it is always to full on dip stick.  Looks like at least 1/2 qtr.  I have looked at manual and put in amount called for, 1.16 qt without filter.  What would cause level to appear to full.  Thanks